Yes, if you have a decent screen, PDFs are pretty good. And on the Mac, they are also pretty damn fast. scribd is quite impressive for what it does, but Flash

Yes, if you have a decent screen, PDFs are pretty good. And on the Mac, they are also pretty damn fast. scribd is quite impressive for what it does, but Flash is a cruddy interface for dealing with multi-page documents. Add in the lack of recognition for the scroll-wheel, and poor font-rendering compared to native, and scribd becomes an active annoyance.